PDF malware analysis — malicious · 9ac6a1b84e6b9276

MALICIOUS

PDF

42.9 KB Created: 2021-05-14 21:07:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: d30b846d3e15e828d4fa78d891ca112e SHA-1: 71e5d642b1f57aedb9e0c04ff66cc68889a31313 SHA-256: 9ac6a1b84e6b92766a6e2efd692a52d4a8a69597e3bdfda562c2df0fc49af8ec

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

Heuristics 4

PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE

PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
External URI info PDF_URI

PDF contains an external URL action
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL https://netcdn.xyz/app/406889139/coins-master-hacks-game-hack PDF link annotation
- https://www.advancedcube.com/uploaded_files/userfiles/files/roblox-assassin_GM431946152.pdfIn PDF document text
- https://www.advancedcube.com/uploaded_files/userfiles/files/jailbreak-script_GM431946152.pdfIn PDF document text
- https://www.advancedcube.com/uploaded_files/userfiles/files/haktutsin-2021-09-coinmaster50freespinandcoinlinkhtml-m-1_GM406889139.pdfIn PDF document text
- https://www.advancedcube.com/uploaded_files/userfiles/files/roblox-cp_GM431946152.pdfIn PDF document text
- https://www.advancedcube.com/uploaded_files/userfiles/files/daily-coin-master-free-link_GM406889139.pdfIn PDF document text
- https://www.advancedcube.com/uploaded_files/userfiles/files/roblox-source_GM431946152.pdfIn PDF document text
- https://www.advancedcube.com/uploaded_files/userfiles/files/coin-master-free-coins-and-spins-online-tool_GM406889139.pdfIn PDF document text
- https://www.advancedcube.com/uploaded_files/userfiles/files/coin-master-free-rare-cards_GM406889139.pdfIn PDF document text
- https://www.advancedcube.com/uploaded_files/userfiles/files/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
- https://www.advancedcube.com/uploaded_files/userfiles/files/promo-code-free-robux_GM431946152.pdfIn PDF document text
- https://www.advancedcube.com/uploaded_files/userfiles/files/coin-master-free-pet-snacks_GM406889139.pdfIn PDF document text
- https://www.advancedcube.com/uploaded_files/userfiles/files/can-i-have-robux_GM431946152.pdfIn PDF document text
- https://www.advancedcube.com/uploaded_files/userfiles/files/500-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.advancedcube.com/uploaded_files/userfiles/files/is-coin-master-free_GM406889139.pdfIn PDF document text
- https://www.advancedcube.com/uploaded_files/userfiles/files/can-i-download-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://www.advancedcube.com/uploaded_files/userfiles/files/robloxbux-us-generator_GM431946152.pdfIn PDF document text
- https://www.advancedcube.com/uploaded_files/userfiles/files/coin-master-hack-app-for-ios_GM406889139.pdfIn PDF document text
- https://www.advancedcube.com/uploaded_files/userfiles/files/wurst-hacked-client-112-2_GM479516143.pdfIn PDF document text
- https://www.advancedcube.com/uploaded_files/userfiles/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
- https://www.advancedcube.com/uploaded_files/userfiles/files/coin-master-mod-version-free-download_GM406889139.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004cec.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4CEC	25172 bytes
SHA-256: `a907eb608e991ef64267f6d8f9be31071dfebfce171ff21aea4fdf9ff10f209a`
`font_01_sfnt_off0000871c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x871C	17716 bytes
SHA-256: `d488acdeac9c101f8c7dc9d2f61752a744fbde28c1faa2289984f0ec4d4cc76f`

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